Farymann Diesel 15W Repair Manual page 24

RE-ASSEMBLING PROCEDURES
7. Cylinder head :
Remove the valve cover by removing the lock
nuts and the plastic washers. If necessary tap
the cover lightly with a soft faced hammer. Dis-
card plastic washers and valve cover gasket.
Remove the 2 locknuts and washers (1) holding
the protection tube retaining spring.
Loosen the 4 cylinder head nuts (2) using a
torque wrench.
Drive out the rocker arm bolt with a drift pin and
a hammer.
Remove rocker arms and push rods.
Check rocker arm bushings for wear.
Replace bushings if necessary.
Check push rods for bending and wear at the
taper ends
Replace if necessary..
Remove the cylinder head nuts and cylinder
head. Remove the protection tube.
Remove cylinder head gasket using a screw-
driver.
Check valves, valve seat and valve guide for
wear or damage. Replace if necessary.
Check blanking plugs ( water cooling room ) for
leakage.
Caution
Use a valve spring compressor to remove the
valves.
Valve guides can be easy removed with a valve
guide driver ( refer to Special Tool List ! )
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